CN220936802U

CN220936802U - Heating element and aerosol generating device

Info

Publication number: CN220936802U
Application number: CN202322393750.7U
Authority: CN
Inventors: 莫和臣; 杨扬彬; 刘才学
Original assignee: Shenzhen Geekvape Technology Co Ltd
Current assignee: Shenzhen Geekvape Technology Co Ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-05-14
Anticipated expiration: 2033-08-31

Abstract

The utility model relates to the technical field of atomization devices, in particular to a heating element and an aerosol generating device. The heating areas of the first heating area and the second heating area are distributed in the circumferential direction of the heat conducting matrix, the heating area of the first heating area is close to the first end, and the heating area of the second heating area is close to the second end, so that no matter the heating element on the first arc section and the heating element on the second arc section work simultaneously or independently, the heat conducting matrix is heated in a non-whole circumference mode, the heat conducting matrix has lower temperature, the generated aerosol temperature is lower, and the nozzle is not easy to scald when the aerosol starts to be pumped. The first electric heating element and/or the second electric heating element can be controlled to heat and regulate the temperature of the heat conducting matrix, so that aerosol with proper temperature can be obtained.

Description

Heating element and aerosol generating device

Technical Field

The utility model relates to the technical field of atomization devices, in particular to a heating element and an aerosol generating device.

Background

The aerosol generating device is used for generating aerosol for a user to inhale. Currently, aerosol-generating devices are broadly divided into two main types, one of which is to heat aerosol-generating oil, and by adding aerosol-generating oil to the aerosol-generating device, the aerosol-generating oil is heated and atomized by an electric heating element to generate aerosol. Another type is to heat an aerosol-generating rod, specifically, to insert the aerosol-generating rod into a heating element of an aerosol-generating device, and to heat the aerosol-generating rod by the heating element to generate an aerosol. The heating element is usually required to control the temperature when heating the aerosol-generating rod, so that the material for generating an aerosol in the aerosol-generating rod generates an aerosol without burning.

When aerosol is generated by adopting an aerosol generating rod at present, the temperature of the aerosol is too high when heating is started, and the aerosol is easy to scald when a user sucks.

Disclosure of utility model

The utility model provides an aerosol generating device, which is used for solving the technical problem that a user is easy to scald when sucking due to the fact that the temperature of aerosol is too high when the current aerosol generating device starts to heat.

The present utility model also provides a heating element used in the aerosol-generating device.

According to a first aspect, there is provided in one embodiment a heat generating body including a heat conductive base and a heating member;

The side wall of the heat conducting base body at least comprises a first arc-shaped section and a second arc-shaped section, the first arc-shaped section and the second arc-shaped section are circumferentially arranged along the heat conducting base body, the heating element at least comprises a first electric heating element and a second electric heating element, the first electric heating element is configured on the first arc-shaped section, the second electric heating element is configured on the second arc-shaped section, and the first electric heating element and the second electric heating element can work independently to generate heat;

The first arc-shaped section comprises a first heating area and a first empty area, the first heating area and the first empty area are arranged in the axial direction of the heat conducting substrate, the second arc-shaped section comprises a second heating area and a second empty area, and the second heating area and the second empty area are arranged in the axial direction of the heat conducting substrate;

The two ends of the heat conducting matrix in the axial direction are a first end and a second end respectively; the first heating area is close to the first end and far away from the second end, the first empty area is close to the second end and far away from the first end, the second heating area is close to the second end and far away from the first end, and the second empty area is close to the first end and far away from the second end; the first electric heating element is arranged in the first heating area, and the second electric heating element is arranged in the second heating area.

Further, in an embodiment, the heating power of the first electric heating element is smaller than the heating power of the second electric heating element.

Further, in one embodiment, the heat conducting base body is tubular, and the first end is provided with an insertion opening into which the aerosol-generating rod is inserted into the heat conducting base body.

In a further embodiment, the length of the first heat generating area in the axial direction of the heat conducting substrate is smaller than the length of the second heat generating area in the axial direction of the heat conducting substrate.

Further, in an embodiment, an area of the first heating area covered by the first electric heating element is smaller than an area of the second heating area covered by the second electric heating element.

Further, in one embodiment, the heat conducting substrate comprises an airflow heating section and a generating rod heating section, the heat conducting substrate is formed with a heating cavity for heating the aerosol generating rod, the heating cavity is located in the generating rod heating section, the airflow heating section and the generating rod heating section are arranged in the axial direction of the heat conducting substrate, and the airflow heating section is arranged near the second end and is used for heating the airflow entering the aerosol generating rod; the air flow heating section is internally provided with a generating rod stopping structure, and the generating rod stopping structure is used for stopping the air inlet end face of the aerosol generating rod so as to limit the depth of the aerosol generating rod inserted into the heating cavity.

In a further embodiment, a heat exchanger is disposed in the airflow heating section, the airflow heating section is in heat-conducting contact with the heat exchanger, and a plurality of airflow channels are disposed in the heat exchanger, and the airflow channels are used for passing airflow to heat the passing airflow.

In a further embodiment, the generating rod stopping structure is a drainage seat at one side of the heat exchanger, the drainage seat is provided with a generating rod stopping surface for being matched with the aerosol generating rod stopping, the generating rod stopping surface is positioned at one side of the drainage seat, which is opposite to the heat exchanger, and the drainage seat is provided with a drainage hole for guiding airflow to enter the aerosol generating rod from the end face of the air inlet end.

In a second aspect, an embodiment provides an aerosol-generating device comprising a housing, a power source and a heat-generating body, the power source supplying power to the heat-generating body; the heating body comprises a heat conduction matrix and a heating piece;

Further, in one embodiment, the aerosol-generating device further comprises a first thermally conductive base and a second thermally conductive base, the thermally conductive base being sandwiched between the first thermally conductive base and the second thermally conductive base, the first thermally conductive base having a first tube socket hole through which the aerosol-generating rod is inserted into the heating cavity, the second thermally conductive base having a second tube socket hole through which an airflow entering the aerosol-generating rod is passed.

According to the heating element of the embodiment, the heating element on the first arc section is configured in the first heating area, the heating element on the second arc section is configured in the second heating area, the heating areas of the first heating area and the second heating area are distributed in the circumferential direction of the heat conducting base body, the heating area of the first heating area is close to the first end, and the heating area of the second heating area is close to the second end, so that the heating element on the first arc section and the heating element on the second arc section work simultaneously or work independently, namely, the heat conducting base body is heated in a non-whole circumference mode, the heating phase is started, the temperature of the heat conducting base body is slowly increased, the temperature of the heat conducting base body is made to have a lower temperature, the temperature of an aerosol generating rod is lower, and when the aerosol starts to be pumped, even if the water vapor in the aerosol is more, the aerosol is not easy to scald the mouth. In addition, as the first electric heating element and the second electric heating element can generate heat for independent work, the temperature of the heat conducting matrix can be regulated and controlled by controlling the first electric heating element and/or the second electric heating element to heat, so that aerosol with proper temperature can be obtained.

Drawings

Fig. 1 is a schematic structural view of an aerosol-generating device according to an embodiment;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a partial cross-sectional view of an aerosol-generating device according to an embodiment;

FIG. 4 is a schematic structural view of a heat conducting substrate according to an embodiment;

FIG. 5 is a schematic view of another configuration of a thermally conductive substrate in one embodiment;

FIG. 6 is a schematic structural diagram of a drainage seat according to an embodiment;

FIG. 7 is a schematic view of a heat exchanger in one embodiment;

Fig. 8 is a schematic structural diagram of an expanded heat conducting substrate according to an embodiment.

List of feature names corresponding to reference numerals in the figure: 1. an aerosol-generating rod; 11. a suction end; 12. an air inlet end; 2. a thermally conductive substrate; 21. a first arcuate segment; 211. a first heat generation zone; 212. a first empty region; 22. a second arcuate segment; 221. a second heat generation zone; 222. a second empty region; 23. a heating chamber; 24. a first end; 25. a second end; 26. an airflow heating section; 27. generating a rod heating section; 3. a first electrical heating element; 4. a second electric heating element; 5. a heat exchanger; 51. an air flow channel; 52. a shell barrel; 53. a blocking edge; 54. positioning the bulge; 6. a drainage seat; 61. generating a rod stopping surface; 62. drainage holes; 63. a positioning groove; 7. a first thermally conductive base; 71. a first tube socket hole; 72. a first base; 73. a sheath; 8. a second thermally conductive base; 81. a second stem hole; 9. annular spacing; 10. a reflective film; 101. a power supply; 102. a housing.

Detailed Description

The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present utility model. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present utility model have not been shown or described in the specification in order to avoid obscuring the core portions of the present utility model, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.

Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated.

The applicant has found through a great deal of experimental analysis that when the aerosol generating rod is adopted to start generating aerosol, a small amount of water is contained in the aerosol generating rod, and steam is generated after the aerosol generating rod is heated, so that the mouth is easy to scald when the first few mouths of the aerosol generating rod are sucked. After heating for a period of time, the problem of nozzle scalding is not easy to occur after the steam is discharged.

In the heating element, as the first electric heating element is positioned in the first heating area, the second electric heating element is positioned in the second heating area, the first heating area and the second heating area are non-whole-circumference heating areas, the first heating area is close to the first end, and the second heating area is close to the second end. Simultaneously, first electrical heating element and second electrical heating element can be alone to heat the heat conduction base member, when beginning the heating, can make first electrical heating element or second electrical heating element alone to heat the heat conduction base member, reduce the temperature when aerosol generates the stick and begins to produce the aerosol, the temperature of several mouthfuls of aerosol like this reduces, is difficult to scald the mouth. After the moisture in the aerosol-generating rod is reduced, the first and second electrical heating elements may be caused to heat the aerosol-generating rod simultaneously. The heating mode of the aerosol-generating device is richer in that at least one of the first and second electrical heating elements can be selected to operate according to the requirements of use.

The non-whole-circumference heating area refers to only one section in the circumference direction of the heat conducting substrate for configuring the heating element.

Of course, when the heating of the aerosol-generating rod is started, the first electric heating element and the second electric heating element may be operated simultaneously, and the heated area of the heat conductive substrate may be small, so that the temperature of the aerosol at the start of aerosol generation may be reduced as compared with a conventional heating element.

Referring to fig. 1 to 2, before describing the heating element in detail, first, an aerosol-generating rod 1, which is a heating object of the heating element, is described, one end of the aerosol-generating rod 1 is a suction end 11 for sucking aerosol, and the other end is an air inlet end 12, and the air inlet end 12 is used for feeding air into the aerosol-generating rod 1 when the aerosol-generating rod 1 is sucked. The suction end 11 has a filter (not shown). The filter (not shown) may be made of any of a variety of materials that are available in the present or future, such as sponge, tipping paper, etc. The aerosol-generating rod 1 has an aerosol-generating substrate therein and the suction end 11 of the aerosol-generating rod 1 has filter cotton. The aerosol-generating substrate is an aerosol filament or an aerosol sheet for generating an aerosol. In some embodiments, the aerosol-generating substrate is a heated non-combustible substrate, i.e., the aerosol is generated in a non-combustible state after being heated.

In some embodiments, referring to fig. 1 and 2, an aerosol-generating device comprises a heat-generating body, a power source 101 and a housing 102, the power source 101 powering the heat-generating body. The power supply 101 and the heating element are both housed in the case 102. In one embodiment, the power source 101 is a battery.

Referring to fig. 1 to 5, the heating element includes a heat conductive substrate 2 and a heating element including at least a first electric heating element 3 and a second electric heating element 4.

The side wall of the heat conduction matrix 2 comprises a first arc-shaped section 21 and a second arc-shaped section 22, the first arc-shaped section 21 and the second arc-shaped section 22 are circumferentially arranged, the first electric heating element 3 is arranged on the first arc-shaped section 21, the second electric heating element 4 is arranged on the second arc-shaped section 22, and the first electric heating element 3 and the second electric heating element 4 can independently work to generate heat, so that the heat conduction matrix 2 can be independently heated.

The heat conducting base 2 can transfer the heat of the first electric heating element 3 and the second electric heating element 4 to the aerosol generating rod 1 to heat the aerosol generating rod 1, and the heat conducting base 2 can be made of any feasible heat conducting material, and can be made of a metal material or a heat conducting nonmetal material.

The first arcuate segment 21 and the second arcuate segment 22 are arranged in the circumferential direction of the heat conductive base 2. In one embodiment, referring to fig. 4, 5 and 8, the first arc-shaped section 21 and the second arc-shaped section 22 are both semicircular arc-shaped sections, and the heat conducting substrate 2 is formed by splicing the first arc-shaped section 21 and the second arc-shaped section 22. In some other embodiments, the first arc-shaped section and the second arc-shaped section may be arranged in a plurality of possible manners, for example, in one embodiment, the central angle corresponding to the first arc-shaped section 21 is greater than 180 degrees, and the central angle corresponding to the second arc-shaped section 22 is less than 180 degrees; for another example, in one embodiment, the central angle corresponding to the first arc segment 21 and the central angle corresponding to the second arc segment 22 are smaller than 180 degrees, and at this time, the heat conducting substrate 2 further includes a third arc segment, and the first arc segment 21, the second arc segment 22 and the third arc segment are arranged along the circumferential direction of the heat conducting substrate 2 to be spliced together into the heat conducting substrate 2. In some embodiments, the heater may also include two circumferentially spaced arcuate plates, each extending axially along the heater, the first arcuate segment being on one arcuate plate and the second arcuate segment being on the other arcuate plate.

The first arc-shaped section 21 comprises a first heat-generating region 211 and a first empty region 212, the first heat-generating region 211 and the first empty region 212 are arranged in the axial direction of the heat-conducting base body 2, and the second arc-shaped section 22 comprises a second heat-generating region 221 and a second empty region 222, and the second heat-generating region 221 and the second empty region 222 are arranged in the axial direction of the heat-conducting base body 2. The heat conductive substrate 2 has first and second ends 24 and 25 at axial ends thereof, respectively. The first heat generating region 211 is adjacent to the first end 24 and is far from the second end 25, the first free region 212 is adjacent to the second end 25 and is far from the first end 24, the second heat generating region 221 is adjacent to the second end 25 and is far from the first end 24, and the second free region 222 is adjacent to the first end 24 and is far from the second end 25. The first electric heating element 3 is arranged in the first heating area 211, and the second electric heating element 4 is arranged in the second heating area 221.

The heating area described in the present application is the installation area where the heating element is located, and the empty area is the area where the heating element is not installed. It should be noted that the heating area and the empty area should be considered as a whole, for example, the heating element in which the heating area is disposed is a heating belt that is bent reciprocally, the heating belt includes a plurality of parallel segments disposed in parallel at intervals, and a region between adjacent parallel segments is a part of the heating area although the heating belt is not disposed.

By arranging the heating elements on the first arc-shaped section 21 at the first heating area 211 and the heating elements on the second arc-shaped section 22 at the second heating area 221, the heating areas of the first heating area 211 and the second heating area 221 are distributed in the circumferential direction of the heat conducting matrix, and the heating area of the first heating area 211 is close to the first end 24, and the heating area of the second heating area 221 is close to the second end 25, thus the heating elements on the first arc-shaped section 21 and the heating elements on the second arc-shaped section 22 are heated for the whole circumference of the heat conducting matrix 2, the heating temperature of the heat conducting matrix 2 is slow at the beginning of the heating stage, the temperature of the aerosol generating rod 1 is low, the generated aerosol is low, and even if the water vapor in the aerosol is more, the aerosol is not easy to scald the mouth when the aerosol starts to be pumped.

In an embodiment, the thermally conductive base 2 is tubular, the thermally conductive base 2 is formed with a heating chamber 23 for heating the aerosol-generating rod 1, and the first end 24 is provided with an insertion opening into which the aerosol-generating rod 1 is inserted into the thermally conductive base 2. In particular, in one embodiment, the heating chamber is inserted through the air inlet end 12 of the aerosol-generating rod 1.

In some other embodiments, the heat-conducting substrate 2 may have any other feasible shape besides a tubular shape, such as a cylindrical shape, a multi-lobe shape, etc.

Of course, in order to further reduce the temperature of the aerosol, in one embodiment, one of the first electric heating element 3 and the second electric heating element 4 is selected to heat at the beginning of heating, and then the first electric heating element 3 and the second electric heating element 4 are operated simultaneously to heat after the water content in the aerosol is reduced. The first electric heating element 3 and the second electric heating element 4 each have an individually controlled electric circuit. Of course, in some embodiments, the first electric heating element 3 and the second electric heating element 4 may be connected in parallel in the same circuit, and the circuit is provided with switches corresponding to the first electric heating element 3 and the second electric heating element 4 one by one, and the switches control whether the corresponding electric heating elements are powered on to operate.

Referring to fig. 4, 5 and 8, the first electric heating element 3 and the second electric heating element 4 are mounted on the heat conductive substrate 2. Specifically, in one embodiment, the first electric heating element 3 and the second electric heating element 4 use resistance heating sheets. In some other embodiments, the heating element and the heat conducting substrate 2 may adopt any feasible scheme, for example, in some embodiments, the heating element may be a resistance wire embedded in the heat conducting substrate 2; for example, in some embodiments, the heating element may be a heating film printed on the outer peripheral surface of the heat conducting substrate 2, where the heating element and the heat conducting substrate 2 form a thick film tube together, and an insulating layer is disposed outside the heating film, and where the heat conducting substrate 2 may be a metal tube with better heat conducting performance; for another example, in some embodiments, the heating element may be an electrical resistance wire wound around the outer wall of the thermally conductive base 2.

In one embodiment, in order to enable the heating structure to have more heating modes, the heating power of the first electric heating element 3 is smaller than the heating power of the second electric heating element 4. Thus, the working modes of the first electric heating element 3 and the second electric heating element 4 can be selected according to the heating power requirement, and more kinds of heating requirements can be met. In the initial stage of heating the aerosol-generating rod 1, only the first electric heating element 3 can be turned on, so that the temperature of the generated aerosol is low, and the temperature of water vapor in the aerosol is low in the initial stage, so that the mouth is not easy to scald. Of course, it is also possible to switch on only the second electric heating element 4 in the initial stage of heating.

Of course, in some other embodiments, the first electric heating element 3 and the second electric heating element 4 may also have the same heating power. Of course, in some other embodiments, the heating power of the first electric heating element 3 may be greater than the heating power of the second electric heating element 4.

Further, in one embodiment, referring to fig. 2 to 5, the inlet end 12 of the insertion port aerosol-generating rod 1 is inserted into the heating chamber 23. Since the first electric heating element 3 is close to the first end 24 and far from the second end 25, and the second electric heating element 4 is close to the second end 25 and far from the first end 24, after the second electric heating element 4 heats the aerosol-generating rod 1, heat flows from the air inlet end 12 to the suction end 11 of the aerosol-generating rod 1, and during the flowing process, the aerosol-generating rod 1 is heated, and the aerosol-generating rod 1 is heated when passing through the heating area corresponding to the first electric heating element 3. The heating power of the first electric heating element 3 is smaller than the heating power of the second electric heating element 4, which balances the temperature of the aerosol-generating rod 1 in the length direction, avoiding that the temperature of the part near the suction end is too high.

In one embodiment, referring to fig. 2 to 5, the length of the first heat generating area 211 in the axial direction of the heat conducting substrate 2 is smaller than the length of the second heat generating area 221 in the axial direction of the heat conducting substrate 2. This allows a longer heating area of the second electrical heating element 4 to the thermally conductive substrate, which is advantageous for a sufficient heating of the aerosol-generating rod. In some other embodiments, the length of the first heat generating area 211 in the axial direction of the heat conducting substrate 2 may be equal to or greater than the length of the second heat generating area 221 in the axial direction of the heat conducting substrate 2.

In one embodiment, referring to fig. 2 to 5, the area of the first heating element 211 covered by the first electric heating element 3 is smaller than the area of the second heating element 221 covered by the second electric heating element 4. The second electric heating element 4 has a large coverage area and has high heating efficiency on the heat conducting substrate 2.

In some other embodiments, the area of the first heating area 211 covered by the first electric heating element 3 may be equal to or larger than the area of the second heating area 221 covered by the second electric heating element 4.

Specifically, in one embodiment, referring to fig. 4, 5 and 8, the first electric heating element 3 and the second electric heating element 4 are disposed in a reciprocating bending manner. Wherein one end of the first electric heating element 3 and one end of the second electric heating element 4 are connected together to share one electrode terminal, which facilitates the external connection of wires.

In one embodiment, referring to fig. 2 and 3, the heat conductive substrate 2 includes an airflow heating section 26 and a generating rod heating section 27, the airflow heating section 26 and the generating rod heating section 27 are arranged in an axial direction of the heat conductive substrate 2, and the airflow heating section 26 is disposed near the second end 25. The airflow heating section 26 is used to heat the airflow before it enters the aerosol-generating rod 1. A generating rod blocking structure is arranged in the airflow heating section 26 and is used for blocking with the end surface of the aerosol generating rod 1 inserted into the heating cavity 23 so as to limit the depth of the aerosol generating rod 1 inserted into the heating cavity 23. The first heat generation areas 211 are all on the generating rod heating section 27. The airflow entering the aerosol-generating rod 1 is preheated by the airflow heating section 26, so that the inside and the outside of the aerosol-generating rod 1 are heated, and the overall heating is more uniform.

Further, in an embodiment, referring to fig. 2, 3, 6 and 7, a heat exchanger 5 is disposed in the airflow heating section 26, the airflow heating section 26 is in heat-conducting contact with the heat exchanger 5, and a plurality of airflow channels 51 are disposed in the heat exchanger 5, and the airflow channels 51 are configured to pass through airflow to heat the passing airflow. The heat exchanger 5 is used for uniformly heating the air flow, so that the heating efficiency of the air flow is improved.

Specifically, in one embodiment, referring to fig. 2, 3, 6 and 7, the airflow channels 51 of the heat exchanger 5 extend along the axial direction of the heat conducting substrate 2, and a plurality of airflow channels 51 are uniformly arranged at intervals. In some other embodiments, the heat exchanger 5 may not be provided, and the air flow is directly heated after passing through the air flow heating section 26.

In order to further improve the uniformity of heating the aerosol-generating rod 1, please refer to fig. 2, 3, 6 and 7, the generating rod stopping structure is a drainage seat 6 located at one side of the heat exchanger 5, the drainage seat 6 has a generating rod stopping surface 61 for stopping and matching with the aerosol-generating rod 1, the generating rod stopping surface 61 is located at one side of the drainage seat 6 facing away from the heat exchanger 5, the drainage seat 6 is provided with a plurality of drainage holes 62, and the drainage holes 62 are used for guiding airflow to enter the aerosol-generating rod 1 from the middle part of the end surface of the aerosol-generating rod 1. One drainage hole 62 is positioned at the center of the drainage seat 6, and the rest of the drainage holes 62 are uniformly distributed at the periphery of the center line. In some other embodiments, annular protrusions may also be provided in the thermally conductive base body 2 to stop the end face of the aerosol-generating rod 1; the heat exchanger 5 may also form a generating rod stopper structure, the heat exchanger 5 stopping the end face of the aerosol generating rod 1.

Specifically, in one embodiment, referring to fig. 2, 3, 6 and 7, the drainage seat 6 and the heat exchanger 5 are all assembled in the heat conducting substrate 2 in an interference manner. The heat exchanger 5 comprises a shell 52 and a flange 53 at one end of the shell 52. The stop edge 53 stops against the second end 25 of the thermally conductive base 2, limiting the depth of insertion of the cartridge 52. In order to facilitate the positioning of the drainage seat 6, the shell 52 of the heat exchanger 5 is provided with a positioning protrusion 54, the drainage seat 5 is provided with a positioning groove 63 matched with the positioning protrusion 54 in a positioning way, and the heat exchanger 5 and the drainage seat 6 are stacked together after being positioned.

To facilitate the mounting of the thermally conductive base 2, in one embodiment, please refer to fig. 2 and 3, the aerosol-generating device comprises a first thermally conductive base seat 7 and a second thermally conductive base seat 8, the thermally conductive base 2 being sandwiched between the first thermally conductive base seat 7 and the second thermally conductive base seat 8, the first thermally conductive base seat 7 having a first tube socket hole 71 through which the aerosol-generating rod 1 is inserted into the heating chamber 23, the second thermally conductive base seat 8 having a second tube socket hole 81 through which the airflow entering the aerosol-generating rod 1 passes.

Specifically, in one embodiment, referring to fig. 2 and 3, the first end 24 of the thermally conductive base 2 is inserted into the first socket hole 71 and is interference fit with the first socket hole 71, and the second end 25 is inserted into the second socket hole 81 and is interference fit with the second socket hole 81. The first heat conducting base seat 7 comprises a first seat body 72 and a sheath 73, and the first seat body 72 and the sheath 73 are integrally formed. One end of the sheath 73 is connected with the first base 72, and the other end is in interference fit with the second heat conducting base 8. An annular space 9 is formed between the sheath 73 and the heat conducting base body 2, and the annular space 9 can block heat from being transferred to the sheath 73, so that heat overflow is reduced. In order to further reduce heat conduction outwards, the inner wall of the sheath 73 is covered with the reflecting film 10, infrared light can be reflected to the heat conducting substrate 2 through the reflecting film 10, the sheath 73 is reduced in absorbing infrared light, and the temperature of the sheath 73 is reduced.

In addition, the thermally conductive base 2 may be assembled in any feasible manner, such as by the thermally conductive base 2 being directly secured to the housing 102 of the aerosol-generating device; for another example, the first end 24 of the thermally conductive base 2 is secured to the housing 102 of the aerosol-generating device and the second end 25 is secured to the second thermally conductive base seat 8 without the use of the first thermally conductive base seat 8.

In an embodiment of the present application, please refer to fig. 3 to 5, the first heating area 211 and the second heating area 221 of the heating element disposed on the heat conducting substrate 2 heat only the non-whole circumferential area in the circumferential direction. When starting preheating the aerosol-generating rod 1, the first electric heating element 3 heats up, heating the upper half of the aerosol-generating rod 1, because of the smaller heating area, heating the vaporized water molecules relatively less, enabling the temperature of the first few aerosols. After the preheating is finished, the second electric heating element 4 starts to heat, and the first electric heating element 3 assists in heating, at this time, the temperature of the lower half section of the heat conducting base body 2 is higher than that of the upper half section, and the rest of the aerosol-generating rod 1 is heated. The upper and lower parts described in this embodiment are based on the positional relationship in the drawing, and do not limit the actual state of the heat conductive substrate.

In some embodiments of the heat-generating body, the structure of the heat-generating body is the same as that described in any of the embodiments of the aerosol-generating device described above, and will not be described in detail.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims

1. The heating body is characterized by comprising a heat conduction matrix and a heating element;

2. A heat-generating body as described in claim 1, wherein the heat-generating power of the first electric heating element is smaller than the heat-generating power of the second electric heating element.

3. A heating element according to claim 1, wherein said heat conductive base has a tubular shape, and said first end is provided with an insertion opening into which an aerosol-generating rod is inserted into said heat conductive base.

4. A heat-generating body as described in claim 3, wherein a length of the first heat-generating region in an axial direction of the heat-conducting base is smaller than a length of the second heat-generating region in the axial direction of the heat-conducting base.

5. A heat-generating body as described in claim 3, wherein an area of the first heat-generating region covered by the first electric heating element is smaller than an area of the second heat-generating region covered by the second electric heating element.

6. A heat-generating body as described in any one of claims 3 to 5, wherein the heat-conductive substrate includes an airflow heating section and a generating rod heating section, the heat-conductive substrate is formed with a heating chamber for heating the aerosol-generating rod, the heating chamber is in the generating rod heating section, the airflow heating section and the generating rod heating section are arranged in an axial direction of the heat-conductive substrate, and the airflow heating section is provided near the second end, the airflow heating section is for heating an airflow entering the aerosol-generating rod; the air flow heating section is internally provided with a generating rod stopping structure, and the generating rod stopping structure is used for stopping the air inlet end face of the aerosol generating rod so as to limit the depth of the aerosol generating rod inserted into the heating cavity.

7. A heat-generating body as described in claim 6, wherein a heat exchanger is provided in said airflow heating section, said airflow heating section being in heat-conductive contact with said heat exchanger, said heat exchanger having a plurality of airflow passages therein for passing an airflow therethrough to heat the passing airflow.

8. A heat generating body as recited in claim 7, wherein the generating rod retaining structure is a flow guiding seat on a side of the heat exchanger, the flow guiding seat having a generating rod retaining surface for engagement with the aerosol generating rod retaining, the generating rod retaining surface being on a side of the flow guiding seat facing away from the heat exchanger, the flow guiding seat having a flow guiding aperture for guiding an air flow from the air inlet end face into the aerosol generating rod.

9. An aerosol-generating device comprising a housing, a power source and a heat-generating body as claimed in any one of claims 1 to 8, the power source supplying power to the heat-generating body.

10. The aerosol-generating device of claim 9, further comprising a first thermally conductive base seat and a second thermally conductive base seat, the thermally conductive base sandwiched between the first thermally conductive base seat and the second thermally conductive base seat, the first thermally conductive base seat having a first tube socket hole through which the aerosol-generating rod is inserted into the heating cavity, the second thermally conductive base seat having a second tube socket hole through which air flow into the aerosol-generating rod is passed.